The main features of quantum computing are described in the framework of spin resonance methods, and the role of the two basic operations, one-spin rotation and controlled-NOT gates, is analyzed, and some exercises are proposed.
The I simply modified a misprint (indicated in a footnote) and some that do not appear in the published versions, simply because I have found them after submitting the article. Of course, should I write this article today, I would modify some paragraphs, and be more sharp in some definitions. But no article is perfect, and I think it better to keep the approuved version. I gave a talk on QC in Grenoble during the S´eminaire Daniel Dautreppe, September 1998, which is a more systematic review of the field. A copy of the PowerPoint file is available by sending me an e-mail. Abstract The main features of quantum computing are described in the framework of spin resonance methods. Stress is put on the fact that quantum computing is in itself nothing but a re-interpretation (fruitful indeed) of well-known concepts. The role of the two basic operations, one-spin rotation and controlled-NOT gates, is analyzed, and some exercises are proposed.